Owner manual

INTRODUCTION:
This pyrometer has 4 different "Modes" of operation.
Mode 1: Take temps, store in Memory, recall from Memory
Mode 2: Compute tire temp Averages, taken or entered
Mode 3: 4 car Stopwatch function Mode 4: Interval stopwatch - see
QuickStart
NOTE:
This pyrometer is programmed to automatically record 12 tire temps in a
specified order. Take the temperatures in this same order. Start with the RF, then RR,
LR, and LF. Do the outside of the tire first, the center, then the inside.
If you wish to take temps in a different order:
Push one of the small buttons marked RF,
LR, etc. by the car icon. The pyrometer will then take that temp. Start at the outside of the tire as above.
This pyrometer has special circuitry that will actually determine the final temp more quickly and accurately than ordinary
pyrometers. Simply stick the probe into the tire and push the Read button. No need to wait for the reading to stabilize - the
microprocessor will do this for you. This is called "Anticipation Circuitry" because it electronically anticipates - computes - the
final stabilized temp based on the rate of temp change of the probe. Almost instantly the pyrometer will double beep and move
on to the next temperature location. WAIT UNTIL THE DISPLAY CHANGES TO MOVE THE PROBE. This system gives you more
accurate and consistant readings and helps minimize the variations caused by different people's style of taking tire temps.
NOTE:
IF YOU PREFER TO TAKE TEMPS IN THE TRADITIONAL WAY - waiting for the temps to stabilize on the display, then
record the readings - this pyrometer can be reset to operate this way. All other functions will be the same. To change hold down
Memory buttons #1 & 10 together for 2 seconds. The operating system will change so that when the Read button is pushed the
actual temperature at that time will be recorded. No "Anticipation" of the final temp will take place. The unit will stay in this
mode even if shut off. To change back to anticipation mode repeat the above procedure.
Mode 1 - TAKE TEMPERATURES:
If any temps from your last use are there they
must be cleared before you can take any new temps. If you wish to save them they
can be stored in one of the Memories - 1 to 10. See below.
To CLEAR DISPLAY:
Push "Clear Display" button and hold for 2 seconds. The follow-
ing message will appear:
CLEARING DISPLAY CLEARING DISPLAY
CLEARING DISPLAY CLEARING DISPLAY
CLEARING DISPLAY
DID YOU WANT TO SAVE? DID YOU WANT TO SAVE?
DID YOU WANT TO SAVE? DID YOU WANT TO SAVE?
DID YOU WANT TO SAVE?
If you do want to save these in Memory QUICKLY RELEASE the "Clear Display" but-
ton. Once the display is cleared those temps are lost. See below to save in Memory.
BEGIN:
The display should now be blank except for the upper right temp location
(Right Front outside). An arrow (>) indicates the active temp. Stick the probe into the
outside edge of the tire and push the "Read" button. LEAVE THE PROBE IN THE TIRE
UNTIL THE DISPLAY MOVES TO THE NEXT LOCATION. This happens very quickly.
You don't need to wait for the temps to stabilize. The pyrometer will double beep,
freeze the temp on the display, and move to the next location. Move the probe to the
center of the tire and repeat. Take the remaining temps in the same way. After you
have finished the last one (Left Front inside) all temps on the display will be frozen.
MISTAKES:
If you make a mistake and don't feel that the last temp is correct you can
"back up" one or more locations. Push the "Re-Read" button as many times as needed.
Any temps in that location(s) will be erased.
MORE TEMPS:
To take more temps it will be necessary to Clear the display. You may
want to save these temps in one of the Memories. Temps on the display will stay until
you Clear them, even if the unit is turned off.
STORE TEMPS IN MEMORY:
When you have taken a full set of temps (or even a par-
tial set) you can store them for recall later. Simply push "Store in Memory" AND any
Memory button - 1 to 10 - at the same time. A double beep will indicated that these
(contd.)
Longacre Racing Products, Inc.
www.longacreracing.com
Instructions For No. 50690/92 Memory Pyrometer
50686/90
7/03

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